The invention discloses heat-preservation sound-proof low-density foamed concrete. The heat-preservation sound-proof low-density foamed concrete is characterized by being prepared from, by weight, 40-100 parts of
cement, 5-40 parts of
carbide slags, 5-40 parts of active
powder, 1-20 parts of foaming agents, 0.1-8 parts of foam stabilizers, 0-8 parts of water reducing agents, 0-8 parts of coagulation accelerator, 0-25 parts of waterproof agents, 0.1-5 parts of anti-
cracking agents and 25-150 parts of water, and the foamed concrete is prepared from the materials through mixing, foam molding and maintenance. The heat-preservation sound-proof low-density foamed concrete has the advantages of being low in
dry density, low in heat
conductivity coefficient, high in strength, wide in
raw material source, low in cost, simple in preparation technology, convenient to prefabricate in factories or pour on site and the like; the heat-preservation sound-proof low-density foamed concrete is suitable for building exterior wall heat-preservation
engineering, roof heat-preservation
engineering, floor heating heat-preservation
engineering, composite heat-preservation wall engineering, backfilling engineering,
retaining wall slab engineering and the like.